The Collegiate Church of Saint Gertrude is a historical building in Nivelles, Wallonia, Belgium consecrated in 1046 by Wazon, bishop of Liège in the presence of emperor Henry III. It is an example of Mosan art.
Claudine Ronnay-Docmans writes in the Patrimoine majeur de Wallonie that the interior dimensions recall: "the splendour of the Ottonian liturgy, as people is able to know it for the abbey of Essen (Germany)". [1]
The Westwork, (German: Westwerk) has been reconstructed. Its current form (voted by the population of Nivelles), is the result of a long reconstruction finished in 1984, following severe damage through bombing in May 1940.